// TimeTrend.java
package com.chinasoft.pollution_analysis.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@AllArgsConstructor
@NoArgsConstructor
public class TimeTrend {
    private String timeUnit;
    private String timeValue;
    private String pollutantType;
    private Double avgConcentration;
    private Long sampleCount;
}